Apparatus for drying matrices and casting stereotypes



2 SheetsSheet 1.

(No Model.)

1-]. H. OOTTRELL.

APPARATUS FOR DRYING MATRICES AND GAS'I'ING-STEREOTYPES.

N0. 391,516. Patented 0011.23; 1888.

wfnesaedi N. PE'IERS, Pi munw n hnr. Washinglon D L (No Model.) 2 Sheets-Sheet 2..

E. H. GOTTRELL.

APPARATUS FOR DRYING MATRICES AND GASTING STEREOTYPESA.

No. 391,516. A Patented, .0013. 23, 1888 EDGAR H. COTTRELL, OF STONINGTON, CONNECTICUT.

APPARATUS FOR DRYING MATRICES AND CASTING STEREOTYPES. I

SPECIFICATION forming part of Letters Patent No. 391,516, dated October 23, 1888.

Application filed (Poly 8, 1887. Serial No. 243,713. (No model.)

To all whom it may concern.-

Be it known that I, EDGAR H. COTTRELL, of Stonington, in the county of New London and State of Connecticut, have invented a new and useful Improvement in Apparatus for Drying Paper or other Matrices and Casting Stereotype-Plates Therefrom, of which the following is a specification.

The principal object of my invention is to provide an inexpensive apparatus whereby pulp or other matrices may be dried and in which stereotypeplates may be subsequently cast upon such matrices, and which, because of its comparativelylow cost, may be advantageously employed by country and other small printing establishments and will enable such establishments to quickly and cheaply dry a paper matrix and cast a plate therefrom.

Like the apparatus which is shown in my application for Letters Patent, Serial No. 188,341, filed January 12, 1886, my present invention comprises a two-part pan or mold having its parts hinged together and mounted upon trunnions, wherebyit may be swung into an inclined position to facilitate the pouring of molten metal into it. In such an apparatus the two parts of the pan are held rigidly in proper relation to receive the metal by means of a screw which bears upon the upper portion of the pan and is fitted to a nut in the crossbar, said cross-bar being adj ustably connected with a post at one side of the pan, so that it may be swung out of the way with its screw in case it be desired to open the pan by raising its upper portion on the hinges. The lower portion of the pan is provided with passages for circulation, which may be formed within it as in my aforesaid application, or made in the form of a coil secured to the pan; and the feature of my presentinvention consists in an arrangement for producing the circulation of the heating-fluid through the passages of the pan in order to dry the matrix and also to heat the mold or pan, so that it will not chill the molten metal when the metal is poured thereinto.

My present invention consists in the combi nation,with a two-part casting-pan, one of its parts being constructed with trunnions and provided with passages for circulation, of a water heater or coil permanently connecting theinlet and outlet of such passages on the exterior ofthe pan depending from the pan and sup ported entirely in the space below the pan by its connection with the-inlet and outlet ofsuch passages and movable with the pan as the latter is swung on its trunnions, or connected with the trunnions by stuffing-boxes, and a lamp or burner for heating a portion of the heater or coil between its points of connection with the pan. 7

In the accompanying drawings, Figure 1 is an elevation of an apparatus or machine embodying my invention. Fig. 2 is an elevation of the pan proper with its connected coil or heater and a transverse section of the frame on about the plane of the line :10 00, Fig. 1; and Fig. 3 is a view similar to Fig. 2, showing a modification of my invention.

Similar letters of reference designate corresponding parts in the several figures.

Referring first to Figs. 1 and 2, A B designate, respeetively,the lower and upper parts of the casting-pan, which are made of cast metal and of sufficient strength to retain their plain surfaces, and the lower part, A, has lugs or ears I), which receive hinge-pins b on the upper part,B,of the pan. The lower part of the pan has trunnions If, which are supported in suitable bearings, c, in the main frame 0 of the machine, and from these trunnions b" extend posts or uprights U, with which is connected a cross-bar, A. This cross-bar A has fitted to it as a nut a screw, D, provided with a hand-wheel, D,whereby it may be turned,and connected byalatch,d,with the up er portion, B, of the pan. The crossbar A is pivoted at one end, a, to one post or projection Z2 and its other end is slotted transversely or hooked, as shown at a, and engages a stud or bolt, a", in the other post b. Consequently,when the screw D is loosened, the cross-bar A may be swung laterally to the side of the machine, so as to permit of the upper portion,B,of the pan being raised upon its hinges b, in order to in troduce a matrix thereinto or remove the matrix and the stereotype-plate after casting from the pan.

It will be understood that the lower portion of the pan,A ,is constructed with passages for circulation; but as such passages may be arranged in any desired manner, and as my former application shows such passages in a casting-pan, I have not thought it necessary to here show them. These passages have in communication with them through the trunnions b" a heater or coil, E,whicl1 may be composed of pipe and is rigidly connected with the tron nions b by union-joints 0, so as to provide for the ready removal of the heater or coil E from the pan when desired. The heater or coil E depends to a desired distance below the pan A B, and beneath its lower portion is arranged a lamp or other burner,F,so that the lower portion of the heater or coil is immediately ex posed to heat from this burner. The coil or heater E is supported entirely by the connection of its ends with the inlet and outlet of the heating-passages in the pan and is accommodated in the space below the pau,'so that no greater room is required for the apparatus than if the coil or heater were not present.

It will be understood that the hollow pan A, with its passages, and also the heater E are filled or nearly filled with a flnidsuch as water -and by the heat of the lamp or burner F a rapid circulation of the water or other fluid through the coil or heater E and the hollow portion A of the pan is kept up, thereby serving to dry the matrix in the pan, if desired, before casting, and also serving to heat the pan, so that the metal will not be chilled rapidly as it is poured thereinto. The heater or coil E may be rigidly or permanently connected with the two trunnions b", and when the pan A B is swung into an inclined position, as shown by dotted lines in Fig. 1, the heater or coil E may swing with the pan to the position shown by dotted lines in said Fig. 1.

I have here shown a locking-bar,G, pivoted to the lower portion, A,of the pan at aflwhich may en a e abolt or stud, a ro'ectin in-.

s g ,P J g ward from the frame 0 of the machine, so as to hold the pan in its horizontal position. When the locking-bar G is lifted,the pan will swing into the position shown by dotted lines in Fig. 1,where it will be arrested by the shoulder 9 upon the bar G striking against the stud or projection a.

It will be seen that by my invention I provide a casting-pan which has combined with it the means for heating it, and that by such an apparatus as is shown the work of drying matrices and casting stereotype-plates therefrom may be rapidly and cheaply performed, thus furnishing an apparatus which is most desirable for small printing-offices.

Instead of the ends of the heating-coil E being fast in thetrunniongthey may pass through stufiing-boxes 0, so that when the pan is swung on its trunnions the coil will retain its perpendicular position of dependence from the pan.

The construction shown in Fig. 3 differs from that above described only in having the passages with which the pan is provided for circulation made in the form of a coil, E, secured by straps e or otherwise on the under side of the pan portionA and made a continuation of the coil E. The pan portion A need not in this instance be formed with internal passages. The result of this construction is the same as in Figs. 1 and 2, save that the pan may require longer time for heating it.

I am aware that before my invention a casting-pan has had its inlet and outlet pipes or passages connected with a heater containing a body of heating fluid and arranged at the side of the pan and requiring independent supports. My object has been to provide a serviceable apparatus at thelowest possible cost, and I have therefore reduced the heater to the form of a pipe-coil,which is accommodated entirely in the space below the pan and is supported entirely by the connection of its ends with the pan at the inlet to and the outlet from the heating-passages of the pan.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is

l. The combination,with a two-part castingpan, one of its parts being constructed with trunnions and provided withpassages for circulation, of a water heater or coil connected with the inlet and outlet of such passages depending from the pan and supported in the space below the pan entirely by its connection with the said inlet and outlet, and a lamp or burner for heating a portion of the heater or coil between its points of connection with the passages, substantially as herein described.

2. The combination,with a two-part castingpan, one of its parts being constructed with trunnions and internal passages for circulation, of a water heater or coil permanently connecting the inlet and outlet of such passages on the exterior of the pan and movable with the pan as the latter is swung on its trunnions, and a lamp or burner for heating a portionof the heater or coil between its points of connection with the pan, substantially as herein described.

} EDGAR H. COTTR-ELL.

Witnesses:

G. HALL, HENRY J. MOBRIDE. 

